Bore Salvage

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Definition - What does Bore Salvage mean?

Bore salvage can be defined as the process of rescuing a borehole by removing a stuck product pipe during a trenchless drilling operation. Sometimes during a trenchless pipe installation, the product pipe gets stuck in the borehole. Pipe ramming is a good technique whose percussive action can be used to free such stuck pipes so that boring can be continued.

Pipe ramming is a flexible method that can be used for pipe installation as well as bore salvage.

Trenchlesspedia explains Bore Salvage

During horizontal directional drilling (HDD) problems can arise leading to stuck pipes that can spoil a bore. The bore has to be quickly salvaged in order to prevent a costly rebore or abandonment. When pullback fails, the bore salvage procedure is carried out by attaching the pipe rammer to the end of the product pipe that has been partially installed.

A pulling device such as a winch can also be used to assist the rammer. The percussive action of the rammer helps pull the product pipe from the bore. The bore is thus salvaged and boring can be continued.

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